Theophilus g



(No Model.)

T. G. H. NICHOLSON.

INHALE R.

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' sheet lead, tin,

UNITED STATES PATENT OFFICE.

THEOPHILUS G. H. NICHOLSON, OF LIVERPOOL, ENGLAND.

INHALER.

SPECIFICATION forming' part 0f Letters Patent No. 516,401, dated March13, 1894.

Application filed May 19,1893. Serial No. 474,796. (No model.) Patentedin England June 20, 1892, No. 11,464, and in France January 12, 1893,No. 227,083.

To all whom t may concern.-

Be it known that I, THEOPHILUS GEORGE HUSBAND NICHOLSON, surgeon, asubject of the Queen of Great Britain, residing at Liverpool, 1n thecounty of Lancaster,in the King-v dom of England, have invented certainnew and useful Improvements in Inhalers for InducingAnaesthesia, (forwhich I have obtained Letters Patent in Great Britain, No. 11,464, datedJune 20, 1892, and in France, No. 227,083, dated January 12, 1893,) ofwhich the following is a specification.

This invention has for its Object an oxy-l chloroform or improvedinhaling apparatus whereby chloroform, 85e., can be inhaled withoutdanger from asphyxia, and the i-nvention consists essentially in forminga face or mouth piece admitting oxygen, or in some cases even compressedair (with or without an excess of oxygen) to a patients nose and mouthwhile inhaling chloroform.

The invention is best described by aid of the accompanying drawing,which represents my apparatus partly in side elevation and partly insection, and illustrates the manner of using it.

A, is an ordinary high pressure gas .cylinder of oxygen as now sold: Athe key for turning its square cock: B a pipe therefrom having a cock Ofor disconnecting the elastic bag from the cylinder when filled for use:D a gas bag with protecting net: E a further pipe therefrom having acock F for cutting o the inhaler when required to refill. This pipeleads to a bent tube terminating in av nozzle G about one-fourth of aninch in front of the lips of the patient, as well to allow of the oxygenbeing inhaled through the noseas to prevent its being bitten.`Interposed between the said tube and the cock F is aspring cock H with abutton H which can be pressed at will by the nger of the manipulator andthus admit oxygen from the bag. The cock is held normally closed by aspring N.

I is a receptacle constructed -preferably of patent leather, orifpreferred of papier mache, Vulcanite, celluloid or other suitablematerial, having one end open and nicely adjusted to the face. l

J is a Ventilating opening in the same covered or protected by wiregauze.

K is a sliding tray retaining in position a the Opening provided for thepurpose, as well v as for admitting a further supply of atmospheric airin case oxygen be not used. The tray may be withdrawn to any extentdesired, and left in that condition while the apparatus is in use.

L is an eye or ring to keep the tubing in position and prevent kinking.

M is the junction of rubber with rectangular metal tube. This portion ofrubber tubing may be of such length as to keep the bag out of the way.

The mode of action is as followsz-The bag D is carefully filled from thecylinder A-by turning on more or less the cock A. The moment the bag isfully or sufficiently expanded, the cock C previously opened is closed,the cock F having been closed all along. The person to be chloroformednow has the inhaler placed overI the nbse and mouth, more or lessclosely as maybe deemed expedient, as shown by dotted lines in thedrawing. The operator opens the cock F and presses the button on cock H,vthus allowing to the patient as much or as little oxygen through thenozzle G as may be necessary. By the valve H, the supply of oxygen canbe rendered continuous or intermittent at will. By thus hyperoxygenizingthe atmosphere in the chamber I, or supplying oxygen direct to themouth, accidental asphyxia as it is termed, is prevented, and theprincipal and greatest danger associated with the administration ofchloroform is done away with.

vThe receptacle I may be adapted to fit the profile of a childs face aswell as that of an adult. This is effected by providing a telescopicsleeve or face pad on Lhavinga mouth formed to tit a different profilefrom the other. If, therefore, the mouth of the receptacle I does notfit the profile required, the requisite sized pad may be added or drawnforward as the case may be,"so that the latter covers the mouth and noseof the patient. It will be thus seen that theinner telescopic sleeve maybe drawn forward when the device is to be used by a child, and may bereturned within the receptacle I, when the profile of the user is of adifferent size.

I have described one Way in which my invention may be carried intoeiiect, but it is obvious that, once given the general idea, alterationsmay be made without departing from the principle of the invention, e. g.the tray K, instead of sliding as shown in the drawing, maybe hinged andthe spring cock H may have any suitable kind of spring or even anelastic band instead of what is shown on the drawing.

What I claim is- 1. An Oxy-chloroform inhaling apparatus consisting of anon-porous, semi-iexible chamber, box or receptacle to be placed overthe mouth and nostrils and adapted to contain chloroform, in combinationwith a device for supplying oxygen or oxygenated air, substantially asdescribed.

2. The combination With the inhaler having the tube and nozzle G, andwith the gas-bag D, for containing oxygen, of a tubular connectionbetween said bag and nozzle, and a cock in said connection forcontrolling the iioW of gas.

3. The combination with a chamber or reeeptacle I, having an open endadapted to t over the face of the user, of a telescopic sleeve havingits end of a different contour than that 0E the part I and adapted to beextended be yond the receptacle for use, and when not in use to belocated Within the same.

In testimony whereof I have signed my naine to this specification in thepresence of two subscribing witnesses.

T. G. Il. NICHOLSON.

Witnesses:

G. C. DYMOND, H. P. SHooBRIDeE,

